APA (7th ed.) Citation

Crutchley, L. (2015). How to be happy (or at least les sad). A Perigee Book.

Chicago Style (17th ed.) Citation

Crutchley, Lee. How to Be Happy (or at Least Les Sad). New York: A Perigee Book, 2015.

MLA (9th ed.) Citation

Crutchley, Lee. How to Be Happy (or at Least Les Sad). A Perigee Book, 2015.

Warning: These citations may not always be 100% accurate.